31043561412 has 12 divisors (see below), whose sum is σ = 72434976656. Its totient is φ = 10347853800.

The previous prime is 31043561359. The next prime is 31043561533. The reversal of 31043561412 is 21416534013.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 31043561412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1293481714 + ... + 1293481737.

Almost surely, 2^31043561412 is an apocalyptic number.

It is an amenable number.

31043561412 is an abundant number, since it is smaller than the sum of its proper divisors (41391415244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31043561412 is a wasteful number, since it uses less digits than its factorization.

31043561412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586963458 (or 2586963456 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 31043561412 in words is "thirty-one billion, forty-three million, five hundred sixty-one thousand, four hundred twelve".